Reading a date from xlsx using open xml sdk

Question

I have a date in format \"4/5/2011\" (month/day/year) in a xlsx file in one of the cells. Im trying to parse the file and load those data in some classes.

So far the

Answer 1

I do this after I retrieve any inline string:

    private static object Convert(this DocumentFormat.OpenXml.Spreadsheet.CellValues value, string content)
    {
        switch (value)
        {
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.Boolean:
                if (content.Length < 2)
                {
                    return content?.ToUpperInvariant() == "T" || content == "1";
                }
                return System.Convert.ToBoolean(content);
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.Date:
                if (double.TryParse(content, out double result))
                {
                    return System.DateTime.FromOADate(result);
                }
                return null;
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.Number:
                return System.Convert.ToDecimal(content);
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.Error:
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.String:
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.InlineString:
            case DocumentFormat.OpenXml.Spreadsheet.CellValues.SharedString:
            default:
                return content;
        }
    }